Sistem Kontrol Lampu Otomatis untuk Menghemat Listrik Berbasis Pir Sensor

Abstract

The final project aims to design an automatic lamp control system using PIR sensors and LDR sensors connected to the relays and controlled by the Arduino Pro Mini. Generally the switch automatically uses one sensor for one particular condition only. PIR sensors are used to determine whether or not human activity exists in a room. Meanwhile, LDR sensors are used to obtain light intensity information as these sensors can be made into sensors related to dark and light conditions. PIR sensor testing is done by varying the positioning of the PIR sensor so that the PIR sensor can detect human movement. Testing of LDR sensors is done by way of irradiating the LDR sensor using a flashlight with varying intensity. The results show that the response time for the on / off of the same light for each sensor, both for PIR sensors and LDR sensors, although the distance is variable. Based on the result of the response time obtained from the PIR sensor, which is 0.05 seconds, obtained distance range from PIR sensor that is <4 meter from human. While the LDR sensor is influenced by the light intensity of the light source on the LDR sensor